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Mean judged pitch and yaw as a function of the objective primary-stimulus orientation using ex-situ (top row) and in-situ (bottom row) displays. The left and right panels show respectively the results obtained from the Pitch-primary and Yaw-primary trials. The open and filled symbols correspond to judgments of the variable orientation (pitch or yaw), when the other orientation (yaw or pitch) was fixed at 10° and 30°, respectively. Error bars represent the standard error of the mean.
